Fire extinguishing pump



Sept. 12, 1944. H. E. BRANDT FIRE EXTINGUISHING PUMP Filed Mafch 25,1942 2 Sheets-Sheer; 1

Inventor-r v BHENRYEBRANDT Attorney Sept. 12, 1944. H, ND 2,357,929

' FIRE EXTINGUISHING PUMP Filed March 25, 1942 2 Sheets-Sheet 2 Inventor HENRY E. BRANDT F j 'E- U Attor- Patented Sept. 12, 1944 UNITEDSTATES PATENT OFFICE FIRE .EXTINGUISHING PUMP Henry E. Brandt, North St.Paul, Minn. Application March 23', 1942, Serial No. 435,789 1 Claims..(cl. 299-4)?) Thisinvention relates to a fire extinguishing device orfire extinguishing pump of the stirrup type. Such devices or pumps areprovided as a safety measure in places where there may be a fire andform a quick and convenientmeans for extinguishing said fire. Saiddevices have greater importance now in places that might be subject toair raids.

It is an object of this invention to provide a very simple and efficientstructure of stirrup pump adapted to be placed in any open-toppedreceptacle containing water.

It is a further object of the invention to provide, a stirrup pumpcomprising a liquid-containing casing having a discharge means at itsupper end, a pump cylinder secured tosaid casing and a bracket securedto said casing holding a stirrup support and also a guide means for theplunger rod of said pump.

These and other objects and advantages of the invention will be fullyset forth in the following description made in connection with theaccompanying drawings in which like reference characters refer tosimilar parts throughout the several views and in which- Fig. lis a viewpartly in side elevation of said device, some parts being broken awayandothers i shown in vertical section;

Fig. 2 is a central'vertical section through the discharge end of saiddevice; 7 Fig. 3 is a view in side elevation of the plunger rod andhandle used, some parts being shown in vertical section;

Fig. 4 is a horizontal section taken on linej44 of Fig. 5 as indicatedby the arrows; Fig. 5 is a vertical section taken on line 5-5 of Fig.4as indicated by the arrow; I Fig. 6 is a view partly in side elevationand partly in vertical section through the discharge nozzle used; V

Fig. '7 is a horizontal section taken on line l---'! of Fig. .5 asindicated by the arrows; and Fig. 8 is a partial view in side elevationof a portion of a deflector used.

Referring to the drawings a device or pump is illustrated comprisinga'casing [0. While this casing might be variously formed,

in the embodiment of the invention illustrated it fire extinguishingmonly used as shown in Fig. 8. A tube H is disposed in casing I0, thesame extending tosubstantially the bottom of said casing and having anopen lower end. Said lower end is shown as extending in a diagonalplane. tends upward. and through the projection H10 and to a point somedistance thereabove. Said tube is provided at its upper end with anenlarged semi-spherical head Ila adapted to be embraced and form aconnection for an elastic hose I2 which will be of considerable smallerdiameter than the ordinary garden hose. A pump cylinder I3 is providedand extends along one side of easing I0 substantially parallel theretoand will be secured to said casing in some suitable, manner as bysoldering or welding. Pump cylinder I3 has an open lower end acrosswhich extends a screen M. A bottom. wall or diaphragm member l5 extendsacross pump cylinder l3 some distance above screen HI and is shown ashaving a cylindrical flange I50 which will be secured to cylinder l3 inany suitable manner as by soldering or welding.

l5 has a central opening IEbtherethrough about which projects downwardlyan annular flange I50. The top portion of member l5 about opening I5bforms a valve seat and a valve I1 is provided comprising an annularwasher-like portion Ha of rubber. leathervor similar material and amember Nb of circular form having a depressed central portion extending.into the central opening of portion I'la.f A plurality of strips orprongs I8 are secured to the bottom of the depressed portion of memberIll) and project downwardly through opening l5b. As shown, these membersl8 are connected at their upper circumference whichis smaller indiameter than the diameter of opening [51). Casing lfl and pump cylinderl3 have a communicating opening in their adjacent walls in which isdisposed a thimble IS. The side of said thimble l9 in casing It) forms avalve seat and a valve 29 is Tube H ex- Member already described. Aplunger rod 22 is provided for pump cylinder l3, the same being in theform of a tube and said tube has secured in its lower end a plug 23. Acup-like member 24 has a cylindrical hub embracing and secured to rod22, the same also having an outer cylindrical flange 24a. Anothercup-like member 25 is provided having a central cylindrical hub alsoembracing the rod 22. Member 25 has an outer annular cylindrical flange25a, and is also provided with an end portion 251). A headed screw 26extends through end-portion 25b and'into the plug 23 thus holding member25 in place. A cup washer 28 of leather or similar material extendsaround and across the end of cup member 24 and a similar washer 29extends around cup member 25. Said washers 28 and 29 are oppositelydisposed and their annular or cylindrical portions engage the wall ofcylinder I3.

' Said washers with their adjacent parts thus form a plunger for rod 22.Rod 22 extends upwardly and through a guide member 3|] secured in abracket 3! to be later described. A washer 32 having a cylindrical hub32a is secured to rod 22 in any suitable'manner as by a screw 33 andformsastop for the downward movement of rod 22. A similar washer 32 issecured to rod 22 some distance below the first mentioned washer 32 andforms a stop for rod 22 in its up-' ward movement. It will be noted thatwashers 32 have their hub portions oppositely disposed. Rod '22 at itsupper end extends through and is secured to a tube 21 forming a handlefor said rod- 22. It will be noted that the upper end of tube 22' isopen at the top of handle or tube 21. A stirrup member or support 34 isprovided, the same having a horizontally extending lower portion 34d andan offset upwardly extending standard 34b. Bracket-3| is in the form ofa pair of straps which extend and embrace cylinder III at one end, thesamehaving interlocking connected portions 3|a' at one side of .saidcylinder; The straps designated 3|b'thus project 3 at the opposite sideof casing l0. Member is held between straps 3H) and said straps are bentto provide hook-like portions 3| 0 at their ends between which thestandard 34b extends. It will be noted that standard 34b is somewhatcurved in transverse cross section as shown in Fig. 3. A screw 35extends through and between straps 3") having one end threaded in one ofsaid straps and has oppositely extending wings at one end to form athumb screw. A strap 36 is provided which extends between straps 31b,the same being formed of some flexible material such as closely wovenfabric. Said strap has an eyelet or grommet 31 secured therein throughwhich screw 35 extends. Strap 36 is in practice provided with a buckleand the usual perfov j w rated end cooperating therewith, said bucklenot being shown. e

A nozzle member is provided comprising a body 38 having a cup-likeportion at oneend internally threaded so as to be similar to the femaleconnection on an ordinary garden hose and thus to be connected to themale connection 39 on such a hose '8. A tube 4| extends through and issecured in member 38, the same projecting somewhat beyond member 38 andbeing provided with an enlarged semi-spherical end 4 la to which 7 the"smaller hose l2 maybe connected as shown in Fig. 1. Tube 4| extendssome distance from member 38 and has secured thereto and surrounding thesame adjacent its end a cup-like member 4|b having its openend andannular.

rim projecting outwardly. A strip 42 is secured at one end to the sideof tube 4| by a screw 43,

the same extendnig alongside of'said tube and V diverging therefrom forthegreater portion of its length. Strip 42 is bent toward said tube atits upper end and passes through a slot 4|c' formed in the end of cupmember4lb- The upper end of strip 42 is somewhat tapered or pointed asshown in Fig." 6 andthe extreme end of said tapered portionis given aslight bend 42a. The tube 4| is shown as contracted somewhat at itsdischarge end and the end portion of strip l 42 normally is disposed atone side of the discharge opening in the end of said tube.

In operation, the device will be equipped with, V

the desired hose which, as stated, may be either a small rubber hosesuch as shown in Fig. 1, or it may be a regular garden hose such asshown as 8 in Figs. 2 and 6. The device so equipped with the hose, whichhose will be connected to.

can be held in place by the operator's foot.

Plunger rod 22 will be reciprocated and the water in receptacle 40 willbe drawn into the pump cylinder I3 as the plunger and rod 22 moveupwardly. At this time valve I! will lift and-its upward motion will ,bestopped b the portions l8a engaging member l5. As the plunger and rod 22move upwardly valve 20 will be heldin closed position. Pump cylinder I3thus fills substantially with liquid and when rod 22 is moved downwardlythis liquid is pressed downward by the plunger. The pressure of thewater thus closes valve l1 andgvalve 20 is opened. The

movement of valve 20 into casing I0 is limitedv by the portions 2 la onthe prong 2|. The water isthus forced into the chamber in casing 10 andwhen this chamber is filled or partly filled the water will be forcedout through tube I and into the hose connected thereto or the hoseconnected to projection Ill. 'The operator can hold the nozzle,comprising members 38 and 4| and if a solid stream of water is desiredthe nozzle will be operated with the strip 42 inthe position shown inFig. 6; Should it. be desired to spray the water the operator will movehis fingers around member and will move the same inwardly over thedischarge opening in "tube 4|. A spray can thus be directed on the fire.the incendiary bombs used in air raids the metal magnesium is used.vThiscan be-bet'ter. extine guished by the use of a spra thereon than bydirecting a solid stream of water on it. With the nozzle shown anddescribed a solid stream or V spray can be had at will. The device canbe' easily carried on the arm by means of the looped or closed strap 36.It will be understood that the screen M will act to keep solid particlesfrom entering the pump. In case of emergency the device could be placedright in the bathtub *and stirrup portion 34a would then engage thebottom of the tub and be submerged in the water.

All parts of the device are so constructed that they can bemade of ironor steel and easily galvanized. The casing l0 and the pump cylinder l3can be galvanized inside and out and this will be done before theends ofcasing I are closed. With the pump rod 22 having an open end this rodcan also easily be galvanized inside and out. The same will be true ofthe tubes With and 4| as Well as the parts attached thereto. By means ofscrew 35 the strap and standard 34 can be readily assembled or veryquickl detached if desired.

From the above description it will be seen that I have provided a verysimple and efficient fire extinguishing device or stirrup pump. Asdescribed, the same can be used with a smaller hose or it can be quicklyattached to an ordinary garden hose. The latter is usually available inmost residences. The structure is simple and compact and comprises fewparts. The device has been amply demonstrated in actual practice andfound to be very successful and efficient.

It will, of course, be understood that various changes may be made inthe form, details, arrangement and proportions of the parts, withoutdeparting from the scope of applicants invention, which, generallystated, consists in a device capable of carrying out the objects aboveset forth, in the parts and combinations of parts disclosed and definedin the appended claims.

What is claimed is:

1. A fire extinguishing device having in combination, a casing having aliquid containing chamber, a pump cylinder disposed at one side of saidcasing, said casing and cylinder being secured together adjacent theirlower ends, a bracket embracing said casing adjacent its top andextending to one side thereof, a plunger rod for said pump cylinder,guide means for said pump rod carried in said bracket, a stirrup supportat one side of said pump cylinder having its upper end secured in saidbracket, said casing having a discharge tube at its upper end,

and a strap for carrying said device extending around said bracket andhaving an eyelet therein and a tightening screw in said bracketextending through said eyelet and adapted to tighten said bracket onsaid stirrup support.

2. A fire extinguishing device having in combination, a casing having aliquid containing chamber therein, a pump cylinder at one side of saidcasing and secured thereto, a bracket extending about said casing andhaving spaced portions projecting at one side thereof, a plunger rod forsaid pump cylinder, a guide for said rod carried in said bracket, astirrup support for said pump having a standard disposed between saidprojecting portions of said bracket and a thumb screw extending throughand between said projecting portions and threaded into one of the samefor tightening the same about said standard.

3. A fire extinguishing device having in combination, a casing having aliquid containing chamber therein, a pump cylinder at one side of saidcasing and secured thereto, a bracket extending about said casing andhaving spaced portions projecting at one side of said casing, a plungerrod for said pump cylinder, a guide for said rod held between saidportions, a stirrup support for said pump having a standard, saidportions having oppositely disposed recesses formed therein, saidstandard being held in said recesses and means for moving said portionstoward each other to clamp said standard there'between.

4. The structure set forth in claim 3, said last mentioned meanscomprising a thumb screw extending through one of said portions andthreaded into the other, a strap for supporting said device extendingbetween said portions, the same having means therein through which saidthumb screw passes for securing said strap to said device.

HENRY E. BRANDT.

